EP1683590B1 - Procédé de fabrication d'une ailette à persiennes pour échangeur de chaleur - Google Patents

Procédé de fabrication d'une ailette à persiennes pour échangeur de chaleur Download PDF

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Publication number
EP1683590B1
EP1683590B1 EP06113469A EP06113469A EP1683590B1 EP 1683590 B1 EP1683590 B1 EP 1683590B1 EP 06113469 A EP06113469 A EP 06113469A EP 06113469 A EP06113469 A EP 06113469A EP 1683590 B1 EP1683590 B1 EP 1683590B1
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EP
European Patent Office
Prior art keywords
punch
tool
flat product
die
wave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP06113469A
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German (de)
English (en)
French (fr)
Other versions
EP1683590A3 (fr
EP1683590A2 (fr
Inventor
David Averous
Michael Grivel
Marc Wagner
Fabienne Chatel
François Fuentes
Claire Turgis Szulman
Etienne Werlen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Fives Cryo SAS
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Nordon Cryogenie SNC
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Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude, Nordon Cryogenie SNC filed Critical Air Liquide SA
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Publication of EP1683590A3 publication Critical patent/EP1683590A3/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/248—Reactors comprising multiple separated flow channels
    • B01J19/249—Plate-type reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
    • F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • F28D9/0068—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements with means for changing flow direction of one heat exchange medium, e.g. using deflecting zones
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/3221—Corrugated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32213—Plurality of essentially parallel sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32237—Sheets comprising apertures or perforations
    • B01J2219/32241—Louvres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32248—Sheets comprising areas that are raised or sunken from the plane of the sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/324—Composition or microstructure of the elements
    • B01J2219/32466—Composition or microstructure of the elements comprising catalytically active material
    • B01J2219/32475—Composition or microstructure of the elements comprising catalytically active material involving heat exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/328—Manufacturing aspects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/10—Mathematical formulae, modeling, plot or curves; Design methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/108—Particular pattern of flow of the heat exchange media with combined cross flow and parallel flow

Definitions

  • the present invention relates to the method of manufacturing a corrugated fin for plate and fin heat exchanger and a device for carrying out the method.
  • the document FR 2 042 512 A discloses a method and apparatus for forming a corrugated fin for a heat exchanger.
  • plate and fin heat exchangers there are different types of plate and fin heat exchangers, each adapted to a field of use.
  • the invention is advantageously applied to a heat exchanger of an air separation unit or H 2 / CO (hydrogen / carbon monoxide) mixtures by cryogenic distillation.
  • This exchanger may be a main exchange line or a vaporizer / condenser.
  • the heat exchanger 1 shown consists of a stack of parallel rectangular plates 2 all identical, which define between them a plurality of passages for fluids to put in indirect heat exchange relationship.
  • these passages are successively and cyclically passages 3 for a first fluid, 4 for a second fluid and 5 for a third fluid.
  • Each passage 3 to 5 is bordered by closing bars 6 which delimit it leaving free windows 7 input / output of the corresponding fluid.
  • wave-waves or corrugated fins 8 serving both thermal fins, spacers between the plates, especially during brazing and to prevent any deformation of the plates during the implementation of fluids under pressure and guiding the flow of fluids.
  • the stack of plates, closing bars and wave-spacers is generally made of aluminum or aluminum alloy and is assembled in a single operation by soldering in the oven.
  • Fluid inlet / outlet boxes 9, of generally semi-cylindrical shape, are then welded to the exchanger body thus produced so as to cover the rows of corresponding inlet / outlet windows, and they are connected to conduits 10 for supplying and evacuating fluids.
  • the serrated wave the most widely used, is of great thermal efficiency but presents performance in terms of pressure losses somewhat penalizing.
  • Wave exchangers of the type used in the automotive industry are manufactured using knobs, with channels of triangular or sinusoidal section and limited densities, from a strip of thin thickness (about 0.1 mm).
  • a louvered wave has a main waving general direction D1 defining a general flow direction F of the fluid.
  • the wave In the plane P orthogonal to the main direction of undulation D1, the wave has a section of sinusoidal shape stretched in height.
  • the sinusoid thus defined extends in a direction D2 perpendicular to the direction D1, these two directions being assumed, for the convenience of the description, horizontal as has been shown in FIG. Figure 2 .
  • the wave has wave vertices 21, defined by the vertices of the sinusoid, and wave bases 22, defined by the bases of the sinusoid.
  • the vertices 21 and the bases 22 alternately connect wave legs 23 each having a mean vertical plane perpendicular to the direction D2.
  • Two consecutive wave legs 23 define between them a fluid passage with respect to the general direction F of flow.
  • each wave leg 23 is cut a series of flaps 25, parallel to each other, and inclined relative to the mean vertical plane and the general direction of undulation D1.
  • the flaps 25 define openings constituting secondary passages of the fluid, in a mainly transversal direction, from one channel to an adjacent channel. These flaps extend over only a portion of the height of the wave leg.
  • Louvered waves, triangular or sinusoidal of the type described above, have not heretofore been used in industrial plate heat exchangers for the following reasons.
  • the vertices and wave bases whether the wave is triangular or sinusoidal, offer only brazing lines on the separator plates, therefore very small mechanical bonding surfaces to the plates.
  • Such fin geometries are therefore not suitable for the high pressures of industrial exchangers, which are conventionally between 6 and 10 bars, and sometimes reach 80 bars.
  • louvered waves used in the automotive industry is closely related to the wheel manufacturing process, which is particularly suitable for high production rates.
  • Other waveforms can be obtained only with great difficulty with a method of manufacturing the wheel.
  • the shutters can only be cut correctly on part of the height of the wave legs. This cutting is not enough for the level of exchange performance sought in industrial exchangers.
  • louvered waves that is to say the wheel
  • the usual production process of louvered waves can hardly be adapted to large strip thicknesses, of the order of 0.2 to 0.5 mm, such as used in industrial exchangers to hold the mechanical stresses on the fins.
  • the object of the invention is therefore to propose a method for manufacturing a louvre-type fin, whose performance in terms of pressure losses is greater in particular to the serrated wave, and which can be used in heat exchangers.
  • a corrugated fin for a plate-and-fin type heat exchanger of the shutter type defining a main direction of corrugation, comprising a set of wave legs alternately connected by a wave-top and a base wave, the legs being provided with shutters cut into said wave legs and inclined at an angle to the main wave direction, includes the wave legs, the vertices and the wave bases forming, in cross-section with respect to the main direction of undulation, rectilinear segments, the vertices and the bases being parallel to each other.
  • the fin offers a brazing surface for use in exchangers of the type mentioned above.
  • a major difficulty in the design of corrugated fins lies in obtaining an optimal compromise between the performance in terms of pressure losses and those of thermal efficiency of the wave. Indeed, it is sought, when making such fins, effects of turbulence and remixing of the fluid inside the passage channels, so as to increase the local temperature difference between the fluid and the wall, and thus promote heat exchange. However, it is essential to control these effects of turbulence and remixing of the fluid, in order to limit the pressure losses generated by the fin. It is essential, especially in industrial installations, for example air separation plants or H 2 / CO mixtures by cryogenic distillation, to limit the energy consumption necessary for the movement of the fluid in the heat exchangers. .
  • louvered fins of the type described above makes it possible to limit the pressure drops induced in the fin and to obtain a high quality of heat exchange, to the extent that this type of fins can be used in industrial cryogenic exchangers.
  • a fin in which the wave legs have a thickness e , a mean transverse spacing w with respect to the main direction of corrugation, which defines the width of a passage channel and a pitch P, and the flaps have a length l s , is characterized in that the length of the flaps is greater than the pitch.
  • the invention relates to a process for the continuous production, from a flat sheet product, of a corrugated vane with shutters for a plate heat exchanger, of the type comprising shutters cut in wavelengths, in particular a fin as described above.
  • the product step-by-step is scrolled in a press tool comprising two moving parts of reciprocating tool, said tool parts producing with the same movement the corrugation of the fin and cutting shutters.
  • the invention further relates to a device for implementing the method described above.
  • This device comprises a press tool, a device for continuously feeding the tool into a flat sheet product, said tool comprising at least one complementary punch and a matrix, said punch being able to be driven by a relative movement of translation by relative to the matrix in a direction substantially orthogonal to the surface of the flat sheet product.
  • Said punch extends in a longitudinal general direction and has a plurality of plane facets, at least one of which is oriented in the direction of translation of the punch and said general direction, and at least one other, intended to form a flap, is oriented following the direction of translation of the punch and a direction inclined with respect to the general direction.
  • a louvre wave which has a main general direction of undulation D1, and a cross section ( Figure 4 ) in crenels, the slots thus defined extending in a direction D2 perpendicular to the direction D1.
  • D1 main general direction of undulation
  • D2 a cross section of crenels
  • the fin has wave peaks 121, defined by the peaks of the crenellations, flat and horizontal. It presents wave bases 122, defined by the bases of the crenellations, also flat and horizontal.
  • the vertices 121 and the bases 122 alternately connect 123 plane and vertical wave legs, whose average plane extends perpendicular to the direction D2.
  • the wave legs 123 are cut a series of flaps 125, parallel to each other, and inclined relative to the vertical plane and the general direction of undulation D1.
  • the flaps 125 define openings constituting secondary passages of the fluid, in a predominantly transverse direction, from one channel to an adjacent channel.
  • the flaps 125 of a wave leg are cut over the entire height (or almost the entire height) of the rectilinear segment defined by the average plane of the waveguide taken in cross section.
  • This arrangement allows, compared to the louvre waves whose shutters are cut on only a portion of the height, to increase the effect of remixing the fluid flowing in the fin.
  • the Figure 5 is a schematic sectional view, in the horizontal plane (H) of symmetry, of the wave shown in FIG. Figure 3 , only three wave legs being represented here.
  • the lines designated by the reference 130 represent the vertical plane of a wave leg 123, plane relative to which is defined the angle of inclination ⁇ of the flaps 125.
  • the pitch of the wave corresponding to the spacing of two consecutive planes 130, corresponding to two consecutive wave legs 23, is designated by the reference p .
  • the thickness e of the walls of the wave is assumed to be constant.
  • the thickness e is between 0.2 and 0.5 mm, essentially to achieve a compromise between the mechanical strength and the density of the fin.
  • the flaps 125 are configured in a pattern that reproduces with a geometric periodicity characterized by a period II.
  • This pattern here comprises two groups of six flaps respectively inclined at a positive angle ⁇ and a negative angle ⁇ , with between these two groups a plane range 132, 134 oriented along the direction D1.
  • Two consecutive transverse wave legs 123 are identical, and therefore consist of the same sequence of patterns reproduced periodically without any relative offset.
  • the corresponding wave legs 123 are devoid of opening.
  • a length l s of shutter such as l s ⁇ 1 , 1. ⁇ p , and preferably again: l s ⁇ 1 , 2. ⁇ p .
  • Cryogenic exchangers can thus be equipped with exchange waves of variable densities corresponding to the different modes of operation of the passages of the same exchanger, in particular having different pressures according to the passages, these pressures being able to reach several tens of bars. It is possible, for example, to produce high density fins for short lengths of flap, or alternatively, fins of lower density with longer flap lengths.
  • ⁇ min ensures a strictly positive opening v between two consecutive flaps 125A, 125C on the same wave leg, namely that it defines an orientation of the flaps excluding a contact between the trailing edge. the first flap 125A with the leading edge of the second flap 125C.
  • the maximum value ⁇ max of the angle ⁇ corresponds, for its part, to the alignment angle of two consecutive flaps 125B, 125C of two consecutive wave legs, and the second condition 1 and. 1 ⁇ X. max ensures an opening such that the passages in consecutive wave legs are not aligned, and thus generate turbulence.
  • an angle of inclination ⁇ corresponding to the condition p ⁇ 1 s .sin
  • this condition makes it possible to ensure easy manufacture of the wave and a spacing e c between two rows of flaps 125 that are strictly positive.
  • a cryogenic plate heat exchanger comprises a stack of parallel plates 2 which define a plurality of generally flat fluid circulation passages 3 to 5, closure bars 6 delimiting these passages, and corrugated fins 8 disposed in the passages, characterized in that at least a portion of the corrugated fins 8 are of the type described above.
  • a device or machine according to the invention which makes it possible to manufacture a corrugated fin with louvers, in particular a fin of the type described with reference to the Figures 3 to 6 , and in particular a thick-walled fin.
  • This device comprises a press tool essentially comprising a matrix 201 and a punch 202 that can be driven by a relative translational movement.
  • the punch 202 and the matrix 201 are animated with a supposedly vertical reciprocating movement.
  • Punch 202 and die 201 have complementary shapes.
  • the tool has an inlet 203 and an outlet 204 through which passes continuously a sheet metal product to be treated.
  • the device has means not shown, for driving and guiding the metal sheet 205, which allow a regular step-by-step movement of the metal sheet in the tool, in an assumed horizontal plane.
  • the punch 202 in cooperation with the matrix 201, performs, at regular intervals, the forming of the metal sheet feeding the tool continuously.
  • the device further comprises means 210 for holding the sheet upstream of the inlet 203, for selectively fixing the sheet relative to the tool or to release it to allow its scrolling.
  • the holding means 210 may for example consist essentially of two clamping jaws located on either side of the surface of the sheet 205.
  • the device further comprises control and control means 220 able to control the operation of the tool, in this case the movements of the punch 202 and the holding means 210, in response to measured and / or prerecorded parameters.
  • the control and control means comprise for this purpose a sensor 221 of the position of the punch 202, and a sensor 222 of position or state of the holding means 210.
  • the control and control means 220 further comprise a computer 225 connected to the position sensors 221, 222, so as to receive their respective detection signals S 1 , S 2 .
  • the computer 225 is further adapted to receive other prerecorded P i parameters, as well as pre-programmed control laws L i .
  • the computer 225 transmits to the punch 202 (that is to say towards its motor unit), and to the holding means 210, respective control signals C 1 , C 2 produced from the detection signals S 1 , S 2 , external pre-recorded parameters P i and control laws L i .
  • the matrix 201 is movable, alternately with the punch 202.
  • the matrix 201 is driven by a motor member also receiving a control signal from the computer 225.
  • the matrix 201 comprises an input spacer 231, a central spacer 232, and an exit spacer 233, while the punch 202 comprises a first part punch 241 (or “first punch”) and a second punch portion 242 (or “second punch”).
  • Each of these elements 231, 232, 233, 241, 242 is elongated in a horizontal general direction D.
  • the inlet spacer 231 and the central spacer 232 are arranged in parallel so as to define between them a spacing 245 of complementary shape of the first punch 241.
  • the central spacer 232 and the outlet spacer 233 are arranged. parallel and spaced so as to define between them a passage 246 complementary to the second punch 242.
  • the movements of the punch 202 with respect to the matrix 201 as defined with reference to the Figure 7 which are reciprocating vertical movements orthogonal to the surface of the sheet 205, correspond to reciprocal integral displacements of the punch portions 241, 242, orthogonal to the plane of the Figure 8 .
  • the first pressing of the metal sheet by the first punch 241 between the spacers 231, 232 makes it possible to perform a first step of waving and cutting the shutters, while the second pressing step of the wave portion thus formed, at means of the second punch 241 and central spacers 232 and output 233, allows for the final forming of the wave.
  • the first punch 241 and the second punch 242 are of substantially identical shapes, while the spacers 231, 232, 233 are of complementary shapes, so that it will be useful to describe the shape of a single punch, for example the first punch 241.
  • This first punch 241 is, in the example shown, of a shape suitable for forming a slotted louvre wave. It has a succession of vertical plane facets, among which facets 251 extending along the longitudinal general direction D of the punch. These "straight" facets 251 correspond to the shapes of the wavetrain sections without flaps.
  • the punch 241 has other flat lateral facets 252 which are facets inclined with respect to this main direction D, and which are intended to perform cutting shutters. Between two consecutive facets, whether two inclined facets 252, or an inclined facet 252 and a "right” facet 251, the punch has a recess 253 in the form of a flat vertical face, orthogonal to the general direction D.
  • a vertical groove 255 for a net cutting shutters in the legs of wave.
  • prerecorded parameters P i and the control laws L i correspond to the geometry setpoint of the corrugated fin. These laws and parameters vary depending on the type of waves to be made and the thermal performance of the corrugated fin or the desired fluid flow characteristics.
  • the method and the device which have just been described allow the continuous production of corrugated fins with louvers, in particular crenellated waves, from metal sheets of large thickness.
  • these method and device can achieve louvered waves used in industrial heat exchangers, with high production rates, comparable to the production rates of louvered fins that are used in the automotive industry.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP06113469A 2001-05-18 2002-05-17 Procédé de fabrication d'une ailette à persiennes pour échangeur de chaleur Expired - Lifetime EP1683590B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0106586A FR2824895B1 (fr) 2001-05-18 2001-05-18 Ailette ondulee a persiennes pour echangeur de chaleur a plaques, et echangeur a plaques muni de telles ailettes
EP02738265A EP1395787B1 (fr) 2001-05-18 2002-05-17 Ailette a persiennes pour echangeur de chaleur

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP02738265A Division EP1395787B1 (fr) 2001-05-18 2002-05-17 Ailette a persiennes pour echangeur de chaleur

Publications (3)

Publication Number Publication Date
EP1683590A2 EP1683590A2 (fr) 2006-07-26
EP1683590A3 EP1683590A3 (fr) 2006-08-30
EP1683590B1 true EP1683590B1 (fr) 2009-07-01

Family

ID=8863441

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EP06113469A Expired - Lifetime EP1683590B1 (fr) 2001-05-18 2002-05-17 Procédé de fabrication d'une ailette à persiennes pour échangeur de chaleur
EP02738265A Expired - Lifetime EP1395787B1 (fr) 2001-05-18 2002-05-17 Ailette a persiennes pour echangeur de chaleur

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JP (1) JP4044444B2 (zh)
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DE (2) DE60219308T2 (zh)
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WO (1) WO2002095315A1 (zh)

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Also Published As

Publication number Publication date
JP2004531684A (ja) 2004-10-14
FR2824895B1 (fr) 2005-12-16
EP1683590A3 (fr) 2006-08-30
EP1683590A2 (fr) 2006-07-26
EP1395787B1 (fr) 2007-04-04
FR2824895A1 (fr) 2002-11-22
WO2002095315A1 (fr) 2002-11-28
DE60219308D1 (de) 2007-05-16
US20040173344A1 (en) 2004-09-09
EP1395787A1 (fr) 2004-03-10
CN1509403A (zh) 2004-06-30
DE60232830D1 (de) 2009-08-13
CN100383485C (zh) 2008-04-23
JP4044444B2 (ja) 2008-02-06
DE60219308T2 (de) 2008-01-03

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